Remaining bearing cap bolts. Note that there are separate sequences for the exhaust and intake camshafts. Lift off all 12 bearing caps.

Exhaust and intake camshafts

Valve lash adjuster shims and hydraulic lash adjusters. Identify each lash adjuster and shim as it is removed so it can be reinstalled in the same position. If the lash adjusters are to be reused, store them upside down in a sealed container.

Camshafts. Coat the thrust portions of each with engine oil, then position them in the cylinder head with the cam lobes and the knock pins in the correct position.

No. 3 and No. 7 bearing caps in place, coat the bolt threads with oil, then tighten them temporarily

Fig. Installing No. 3 and 7 bearing caps-3.0L (2JZ-GE) engine

New oil seals, coated with multi-purpose grease, over the camshafts

No. 1 bearing caps, then apply some sealant. Install the bolts.

Fig. Applying sealant to the No. 1 bearing cap-3.0L (2JZ-GE) engine

All remaining bearing caps. Coat the threads of each bolt with clean oil, then tighten them, in several passes, in sequence, to 14 ft. lbs. (20 Nm). Note that there are separate sequences for the intake and exhaust sides.

No. 4 inside timing belt cover and the camshaft pulleys. Align the shaft pin with the pulley groove and slide the pulley on. Install the bolt temporarily. Hold the hex portion of the camshaft with a wrench; tighten the pulley bolt to 59 ft. lbs. (79 Nm).

Cylinder head covers

Timing belt to the engine

Negative battery cable to the battery

Check and/or adjust the ignition timing as necessary

Fig. Tightening the camshafts (Step 1)-3.0L (2JZ-GE) engine

Fig. Tightening the camshafts (Step 2)-3.0L (2JZ-GE) engine

Fig. Tightening the camshafts (Step 3)-3.0L (2JZ-GE) engine

Before servicing the vehicle, refer to the Precautions section.

Remove or disconnect the following:

Negative battery cable from the battery

Timing belt from the engine

Cylinder head covers

Make reference marks on the timing belt to the crankshaft and idler pulley timing marks.

Remove the timing belt. See TIMING BELT.

WARNING

Do NOT allow anything to drop into the lower part of the timing belt cover. Do NOT allow the timing belt to come in contact with any oil, water or dust.

Remove both the exhaust and intake camshaft pulleys. See procedure under TIMING BELT.

WARNING

Since the thrust clearance of the camshaft is small, the camshaft must be kept level during removal. If not, the portion of the cylinder head receiving the camshaft thrust may crack or be otherwise damaged, causing the camshaft to later seize or break. Follow the camshaft removal procedure carefully as given in this section.

Place the camshaft into the cylinder head, with the cam lobe facing up (cam lobe mark on the exhaust camshaft will be at about 11 o-clock and the cam lobe mark on the intake camshaft will be at 3 o-clock).

Place the No. 3 and No. 7 camshaft journal bearing caps into their positions. Apply engine oil onto thread and under the heads of the bearing cap bolts. Temporarily tighten these bearing cap bolts, uniformly and alternately, until they are snug with the cylinder head.

Install the other bearing caps in proper locations. Apply a light coat of engine oil to bolt threads and under the bolt heads. Install and uniformly tighten the 14 bearing cap bolts on one side, in several passes, following sequence shown. Torque these bolts to 15 ft. lbs. (20 Nm).

With a special oil seal driver, install the 2 oil seals as far as possible by pushing from front end of camshafts.

Rotate camshaft with a wrench on the hex section and bring the forward straight pin up to the 12 o-clock position. Loosen the 12 bearing cap bolts, highlighted in the Step 1 figure, until bolts are just finger-tight. Now, retighten these bolts, in several passes, to 15 ft. lbs. (20 Nm).

Turn camshaft 1/3 of a revolution clockwise, so straight pin is at about the 4 o-clock position. Now, loosen the 8 bolts, as highlighted in Step 2 illustration, until they are just finger-tight. Now, retighten these bolts, in several passes, to 15 ft. lbs. (20 Nm).

Turn the camshaft an additional 1/3 of a revolution, so the straight pin in now at about the 8 o-clock position. Loosen the 8 bearing cap bolts, as highlighted in Step 3 illustration, until they are just finger-tight. Now, retighten these bolts, in several passes, to 15 ft. lbs. (20 Nm).

Check and adjust the valve lash. See VALVE LASH

Install the No. 4 timing belt cover.

Align the exhaust camshaft knock pin with the groove in the camshaft pulley and slide on the pulley. Ensure the front mark is forward. Hold the hex portion of the exhaust camshaft and tighten the exhaust pulley center bolt to 60 ft. lbs. (81 Nm).

Align the intake camshaft knock pin with the groove in the camshaft pulley and slide the pulley into place until it touches bottom. Check that outer circumference of the intake pulley rotates easily through 30°.

Holding the hex portion of the intake camshaft, install and tighten the intake camshaft pulley bolt to 60 ft. lbs. (81 Nm). Using a 14mm hex wrench, install the straight screw plug, with a seal washer to the set bolt. Torque it to 11 ft. lbs. (15 Nm).

Align the dot mark on the intake camshaft pulley with the timing mark of the No. 4 timing belt cover.

Reinstall the timing belt, making sure its position on the crankshaft pulley does not change, and that the marks made on the timing belt line up with the camshaft pulley timing marks.

Clean any old packing material from outside of the 2 rearmost bearing caps and install new packing in its place.

Remaining bearing cap bolts. Note that there are separate sequences for the exhaust and intake camshafts. Lift off all 12 bearing caps.

Exhaust and intake camshafts

Valve lash adjuster shims and hydraulic lash adjusters. Identify each lash adjuster and shim as it is removed so it can be reinstalled in the same position. If the lash adjusters are to be reused, store them upside down in a sealed container.

Camshafts. Coat the thrust portions of each with engine oil, then position them in the cylinder head with the cam lobes and the knock pins in the correct position.

No. 3 and No. 7 bearing caps in place, coat the bolt threads with oil, then tighten them temporarily.

Fig. Installing No. 3 and 7 bearing caps-3.0L (2JZ-GE) engine

New oil seals, coated with multi-purpose grease, over the camshafts

No. 1 bearing caps, then apply some sealant. Install the bolts.

Fig. Applying sealant to the No. 1 bearing cap-3.0L (2JZ-GE) engine

All remaining bearing caps. Coat the threads of each bolt with clean oil, then tighten them, in several passes, in sequence, to 14 ft. lbs. (20 Nm). Note that there are separate sequences for the intake and exhaust sides.